On Language and Groceries

When one's entire knowledge of a language can be counted on two hands, communication becomes interesting. A smile seems to help a lot, but can only go so far. A typical exchange at the grocery store, then, may be summed up thusly:

Jeff: "Anheong heseyo (hello)!" + big smile
Cashier: "Anheong heseyo," +"koreankoreankoreankorean?"
At this point, I pull out the big smile again and shake my head, on the guess that she's asking if I want a plastic bag. I do know how to say no, but I don't want to commit myself in case she's actually asking me something completely different, like if brown is my natural hair colour. So far, the smile + head-shake has worked fairly well, and leads to the next bit, as follows.
Cashier: "koreankoreankorean?"
Jeff: Head-shake + smile. Please note that I don't use the big smile this time, for the simple reason I want to come across as a reasonably sane and intelligent foreigner who simply doesn't speak any korean, rather than as a foreigner of dubious sanity and intelligence for whom a trip to the grocery store is equivalent to a trip to LotteWorld, the Korean equivalent of DisneyWorld.
This second head-shake is based on my presumption that she's asking me if I have a customer loyalty card, which I do not.

(In the interests of full disclosure, it should be noted that my ability to decode even these two simple questions rests in my fortunate circumstances of once having a cashier who spoke some English, and was therefore able to communicate with me more fully.)

Finally, our transaction concludes with me looking at the digital display to see how much I owe, and taking out the appropriate amount. I finish with a hearty "khamsa hamneeda (goodbye)" and stroll off into the distance, impressed to no end by my ability to relate to people of all cultures.

안 녕 히 치 서ㅣ요!